Motorola RMN5058 Lightweight Headset (Black).  FM intrinsic safety standard.

Provides high-clarity, hands-free, two-way communication for extended wear.  Includes adjustable over-the- head, single-ear headset with boom micrphone and in-line push-to-talk (PTT).

Compatibile with the  XPR 6350/ 6550/ 7350/ 7550, APX 4000/ 6000/ 7000 portable two-way radios.